Leon Mangasarian: Merkeldämmerung. It is past time that the German Chancellor stepped down.

Merkel’s sixteen years are marked by high poll ratings but few concrete achievements, and a discreditable closeness to dictators.

Sam Hall: Conservative lessons from Houchen and Street about how to respond to the Greens

By uniting behind Johnson’s plan, and replicating the approach of these two mayors, the the environment can become a winning issue for the party.

Liam Fox: Labour’s choice – adapt or die

It despises the very values of patriotism and economic self-improvement that made people like my grandparents vote for them.

Stephen Booth: Merkel’s departure is Macron’s opportunity – an opening for his dreams of an even closer Union

And if Germany’s Greens are in government after the federal election, they will be inclined to help him.

Garvan Walshe: Merkeldammerung. Germany’s polls put the Greens within striking distance of government.

A traffic light coalition? A Jamaica coalition? Who knows? What’s certain is that the CDU/CSU is struggling amidst a fragmenting landscape.

Daniel Hamilton: So we have a new CDU Chairman. Will a CDU-Green coalition follow after Germany’s federal election?

A Green Minister-President has governed Baden-Württemberg in coalition with the CDU for more than a decade, implementing a pro-business agenda.

Johnson to fly to Brussels. Triumph, sellout, last-ditch gamble – or simply showing willing before talks collapse?

The commonsense presumption must be that he wouldn’t be going at all were a deal not at least possible.

Robert Tyler: We need a Margaret Thatcher Foundation for Democracy

The political foundations of other centre-right governments around the world wield significant influence and are powerful tools for foreign policy.

Johannes de Jong: Many of you think May’s deal is bad for Britain. But it’s bad for us other Europeans too.

EU federalism will be stronger in Britain, as rules are simply imposed on you. And stronger in the rest of Europe – because you’re leaving us.

Garvan Walshe: Merkel stood firm against her party’s worst instincts on immigration. And paid the price.

What would the lesser men who would bring her down have done: put migrants on sealed trains in their tens of thousands and send them – where, exactly?

Henry Newman: A dozen reasons to unstop the backstop

It now the main issue blocking a negotiated agreement – thus risking a No Deal and potentially a harder Irish border. In short, it risks triggering the very thing it is supposed to avoid.

Merkel will rescue the Prime Minister. Where have we heard that before?

The German Chancellor was stronger then than she is now. And there’s no guarantee that any compromise she might push would work.

Immigration is tearing at the foundations of the EU’s old established order

Merkel is threatened. Macron is outraged. Brussels is paralysed. And all three trends are taken by their opponents as signs that they are winning.

Damaged by last year’s election. Playing for time. Grappling with revolts – and resignation threats. We refer, of course, to Merkel.

The German Chancellor faces a rebellion from her Bavarian allies on the question of immigration – and is pleading for more time before the EU summit.

Daniel Hannan: Being good at governing is no guarantee of re-election – just ask Harper and Key

Voters habitually opt for parties of the Right when times are tough, only to ditch them for the Left once there’s money to spare. But now populists seek to break the cycle.